Hyale 561 



IMaxillipeds in <S, finger tipi)ed with very 

 long setule 19. H. camptonyx . . . . p. 570 

 Maxillipeds in cj, setule at tip of finger not 

 very long — 21. 

 IGnathopod 1 in (J, 6*^ Joint not twice as 

 long as broad 20. H. schmidtü . . . . p. 571 

 Gnathopod 1 in (5, ^^^ Joint twice as long as 

 broad — 22. 

 IGnathopod 2 in cj, palm shorter than hind 

 margin 21. H. nigra p. 571 

 Gnathopod 2 in <5, palm not shorter than 

 hind margin 22. H. rubra ..... p. 572 



1. H. carinata (Bäte) 1862 Ällorchestes carinatus, Bäte, Cat. Amphip. Brit. 

 Mus., p. 37 t. 6 f. 2 ((5juv.?) | 1866 Nicea longieornis (non Orchestia l. Kreyer 1845!), 

 E.Grube in: Arch. Naturg., u32i p. 388 | 1866 N. crassipes, Cam. Heller in: Denk. 

 Ak. Wien, ü.26u p.l2 1. 1 f. 34, 35 (djuv.?) | 1893 Hyale pontica(jß&rt.: juv.)'^, A. Della 

 Valle in: F. Fl. Neapel, f. 20 p. 528! 



Peraeon segments 1 — 6 dorsally rounded, not broadly, peraeon segment 7 

 and pleon segments 1 — 3 slightly carinate. Side-plates 1 — 4 rather large, 

 1^* widening, 2^ naiTowing distally. Pleon segment 3, postero-lateral corners 

 quadrate, with slight projecting point. Eyes small, subrotund, wider than 

 their diaraeter apart. Antenna 1 stouter than antenna 2 and not shorter, 

 1^* Joint stout, as long as 2*^ and 3*^ combined, flagellum 11-jointed. Antenna 2, 

 ultimate and penultimate joints of peduncle subequal in length, neither of 

 them as long or nearly as stout as 1^* of antenna 1, flagellum 12-jointed. In 

 the young taken from mother's pouch antenna 1 decidedly longer than antenna 2, 

 flagellum 3-jointed, antenna 2, flagellum 2-jointed. Lower lip, principal lobes 

 distally narrowed, divergent. Maxillipeds, apical spine of palp longer than the 

 conical 4* Joint. Gnathopod 1 in cS", 6*^ Joint small, elongate quadrangular, hind 

 margin almost straight, with a setose indent near middle, palm nearly trans- 

 verse, the slightly curved finger matching it (Heller). Gnathopod 2 in (?, 

 5*^ Joint not produced betweeu 4*^ and 6*^, 6*^ broad, somewhat oval, palm 

 oblique, about equal to the nearly straight hind margin, defined from it by a blunt 

 angle, finger slightly curved (Heller). Gnathopod 1 in 9 , 2'^ Joint narrow, 

 reaching end of side-plate, 5*^ not lobed, scarcely as long as the narrow 

 oblong 6*^, of which the hind margin is fringed with spines, palm convex, 

 not at all oblique, finger longer than palm. Gnathopod 2 in 9 with naiTOW 

 branchial vesicle, and long broad marsupial plate fringed with long 

 setae, the limb almost exactly like that of gnathopod 1, 2*^ Joint slightly 

 larger, 5*^ rather broader, 6*^ rather longer (Grube). Peraeopods 1 and 2 

 rather slender. Peraeopods 3 — 5 rather robust, 2*^ Joint with hind margin 

 faintly crenulate, in peraeopods 3 and 4 this Joint oblong, a little wider above 

 than below, 4*^ Joint expanded to twice width of 5*^; in peraeopod 5 2*^ Joint 

 with convex front margin, hinder expansion giving it a circular appearance, 

 the expansion produced below the 3'^ Joint, 4*^ less expanded than in the 2 

 preceding peraeopods; finger in all peraeopods stout and curved. üropods 1 — 3 

 Short. Telson short, broad, each half nearly as broad at base as the length, 

 apex also broad. L. 9 reaching 6, d reaching 8 mm. 



Mediterranean (Italy, JVIessina); Adriatic. 



2. H. ochotensis (F. Brandt) 1851 Ällorchestes 0., F.Brandt in: Middendorff, 

 Reise Sibirien, v.2i p. 143 t. 6 f. 27a— f | 1893 A. 0., A. Della Valle in: F. Fl. Neapel, 

 V.20 p.528 I 1888 Hyale 0., T. Stebbing in: Rep. Voy. Challenger, u 29 p. 247. 



Das Tierreich. 21. Lief.: T. R. R. Stebbing, Amphipoda I. 36 



